40.8.26 SDHC Capabilities 1 Register

Note: The Capabilities 1 Register is not supposed to be written by the user.

Table 40-28. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	CA1R
Offset:	0x44
Reset:	0x00000070
Property:	-


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16
	CLKMULT[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8

Access
Reset


Bit	7	6	5	4	3	2	1	0
		DRVDSUP	DRVCSUP	DRVASUP		DDR50SUP	SDR104SUP	SDR50SUP
Access		R/W	R/W	R/W		R/W	R/W	R/W
Reset		0	0	0		0	0	0

Bits 23:16 – CLKMULT[7:0] Clock Multiplier

This field indicates the multiplier factor between the Base Clock (BASECLK) used for the Divided Clock Mode and the Multiplied Clock (MULTCLK) used for the Programmable Clock mode (refer to SDHC_CCR).

Reading this field to 0 means that the Programmable Clock mode is not supported.

F_{MULTCLK} = F_{BASECLK} \times (CLKMULT + 1)

Bit 6 – DRVDSUP Driver Type D Support

Value	Description
0	Driver type D is not supported.

Bit 5 – DRVCSUP Driver Type C Support

Value	Description
0	Driver type C is not supported.

Bit 4 – DRVASUP Driver Type A Support

Value	Description
0	Driver type A is not supported.

Bit 2 – DDR50SUP DDR50 Support

Value	Description
0	DDR50 mode is not supported.

Bit 1 – SDR104SUP SDR104 Support

Value	Description
0	SDR104 mode is not supported.
1	SDR104 mode is supported.

Bit 0 – SDR50SUP SDR50 Support

Value	Description
0	SDR50 mode is not supported.
1	SDR50 mode is supported.